Don’t reach for the Doom!
Saturday, 9 December 2023
South African Paper Wasps—Vespidae
Friday, 21 April 2023
Bag-shelter Moth (Ochragaster lunifer)
For about a week I've been watching these caterpillars as they crawled up the wall after some heavy rain. (This is my next-door neighbour's condo.) First of all they were all bundled together in one big mass (didn't think of taking a photo on the first day), but the next day I found them walking up the wall in straight lines.
Why do these caterpillars go in a line? They travel in long lines of hundreds or more in search of food or a suitable place to begin the transformation into their adult form : the Bag-shelter Moth. Together they present a formidable number of irritant hairs to predators and the conga line helps prevent them getting lost.
It is also thought that they walk in line to scare off predators who might think it is a snake. How clever!
These caterpillars are grey and hairy with a brown head. They grow to a length of about 4cms. When they mature, they will descend from their tree (or wall, in this case) to pupate in a silk cocoon in ground debris, and what hatches is the Bag-shelter Moth.
I have actually found that not many birds like to eat this moth. When touched it curls up, showing a black and red body, which I presume signals that it is poisonous.
By the way, lots of caterpillars together is called an "army". These ones are also called Processionary Caterpillars or a "train".
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Saturday, 31 December 2022
Spittle Bugs (or Frog Hoppers)
Wednesday, 21 October 2015
Jewellery inspired by Nature
Did you know that I make jewellery? It started way back in the 1980's, when I used to do stained glass - panels, lampshades, trinket boxes and anything else that could be made out of glass! As you can imagine, one is left with a lot of off-cut glass pieces and I had boxes and boxes full. Racking my brains as to what to do with all this glass, I picked a few small shards and started experimenting with cutting and soldering them together and it turned out that they made beautiful earrings, pendants and brooches!
Tarantulas periodically shed their external skeletons in a process called moulting. In the process, they also replace internal organs, such as female genitalia and stomach lining, and even regrow lost appendages. Tarantulas sizes range from as small as a fingernail to as large as a dinner plate when the legs are fully extended. Depending on the species, the body length of tarantulas ranges from 2.5 to 10 centimetres (1 to 4 in), with leg spans of 8–30-centimetre (3–12 in).
The Leopard Tortoise (or Mountain tortoise - Geochelone pardalis) inhabits a wide range of habitats, from dry Bushveld to moister coastal plains and is the most widely distributed and also the biggest of the 12 species of land tortoise found in Southern Africa. It is believed to take its name 'mountain' tortoise from its size rather than its habitat. ('Leopard' tortoise' comes from the black and yellow blotched patterns on its high-domed carapace.)
Ground-dwelling, these hairy spiders are among the world's largest, ranging from 2-6cm (body length). Various species exist in South Africa, all of them living in burrows. They have large fangs which can inflict an unpleasant bite but without serious envenomation.
Hermit Crabs are very social animals and can live 10 years or more, changing shells, moulting several times throughout their lives and growing up to six inches in length. Did you know that Hermit crabs are sometimes kept as pets? Hermit Crabs are docile and are easy and economical to care for and their crabby antics, like climbing, digging and shell switching are as entertaining as they are educational!
Saturday, 18 July 2015
Orb-web Spiderling
Feels at each thread, and lives along the line.
~Alexander Pope
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During the process of making an orb web, the spider will use its own body for measurements.
After strengthening the first thread, the spider will continue to make a Y-shaped netting. The first three radials of the web are now constructed. (the "Y"-thread can be seen in the pic below by her hind legs). More radials are added, making sure that the distance between each radial is small enough to cross. This means that the number of radials in a web directly depends on the size of the spider plus the size of the web.
Camera: Canon EOS 550D - Location: My bathroom court-yard garden, Tarlton, Gauteng, South Africa
(I did post this in 2012, but thought I'd bring it forward)
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